Boeing Moves Closer to 777X Deliveries with 2026 Flight

Boeing is preparing to conduct the first flight of a production-standard 777X aircraft in April 2026, a milestone that would advance certification efforts for the long-delayed widebody program and keep the manufacturer on track for initial deliveries starting in 2027, according to company documents reviewed by Reuters and statements from Boeing and industry partners.

The planned flight would mark the first time a delivery-configured 777X takes to the air, a requirement set by regulators as part of the certification process. Boeing has faced repeated delays and rising costs on the program since its launch in 2013, but the April 2026 target signals tangible progress after years of schedule revisions.

The aircraft slated for the initial production flight is destined for launch customer Lufthansa and is currently undergoing ground tests at Paine Field in Everett, Washington. Reuters reported that Boeing is conducting fuel system tests on the aircraft and has scheduled engine testing to begin later this month.

“In addition to the dedicated flight test fleet, some production aeroplanes will support testing that does not require flight-test unique equipment and instrumentation,” a Boeing spokesperson told Reuters. 

The 777X program, which includes the 777-9 passenger aircraft as its first variant, is running about six years behind its original schedule. Boeing initially planned to deliver the aircraft earlier in the decade, but the timeline has shifted multiple times due to certification scrutiny, engineering challenges and disruptions across the aerospace supply chain. In October 2025, the company said it expected first deliveries in early 2027.

The financial impact of the delays has been significant. Boeing reported a charge of US$4.9 billion related to the 777X program in its third-quarter 2025 results, contributing to a quarterly loss of US$7.14 per share. Cumulatively, the widebody program has generated more than US$15 billion in development charges, according to Reuters.

Despite these setbacks, demand indicators remain strong. By mid-2025, Boeing had secured more than 540 firm orders for the 777X family. Among the largest commitments is an order from Emirates, which added 65 Boeing 777-9 aircraft to its backlog in a deal valued at approximately US$38 billion, underscoring long-term airline interest in large twin-aisle aircraft for long-haul operations.

GE Aerospace is currently analyzing a potential durability issue involving a seal in the GE9X engines that power the 777X. According to Reuters, the issue could require redesign or retrofit work during maintenance, though Boeing leadership has maintained that the matter will not prevent deliveries from beginning in 2027.

The engine question adds to a history of technical hurdles for the program. Previous delays were tied to design changes, certification requirements and pauses in flight testing. The upcoming production-standard flight is therefore viewed as a key step in demonstrating program stability after years of uncertainty.

Parallel to Boeing’s testing efforts, the broader industry is preparing for the aircraft’s eventual entry into service. Training provider CAE announced it is installing Asia-Pacific’s first Boeing 777X full-flight simulator at the Singapore-CAE Flight Training Centre. The 7000XR simulator is intended to support pilot training for airlines in the region as deliveries approach.

“The B777X is the latest widebody aircraft developed in the market and is central to many airlines’ long-haul strategies, particularly in Asia and the Middle East. With this simulator in Singapore, we are providing the training infrastructure where it is needed most, at the crossroads of Asia-Pacific aviation. This will allow airlines to train their B777X pilots within their region,” said Alexandre Prévost, President of Civil Aviation, CAE.

Prévost added that regional access to training capacity is becoming increasingly important as airlines renew fleets and expand long-haul operations. “This simulator gives airlines in the region a practical option to train their pilots closer to home, at a time when fleet renewal and growth are driving demand for widebody training,” he said.